The first thing that the risk practitioner should do upon learning that a new third-party system on the corporate network has introduced vulnerabilities that could compromise corporate IT systems is to notify information security management. This will help to escalate the issue to the appropriate authority and responsibility level, and to initiate the incident response process. Information security management can also coordinate with the third party, the IT department, and other stakeholders to assess the impact and severity of the vulnerabilities, and to implement the necessary actions to contain, eradicate, and recover from the incident. Confirming the vulnerabilities with the third party, identifying procedures to mitigate the vulnerabilities, and requesting IT to remove the system from the network are not the first things that the risk practitioner should do, as they may not address the urgency and priority of the issue, and may not involve the relevant decision makers and responders. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 4, Section 4.2.1.2, page 1931
1: ISACA Certified in Risk and Information Systems Control (CRISC) Exam Guide, Answer to Question
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A business case will BEST communicate the importance of risk mitigation initiatives to senior management, because it provides a clear and concise justification of the objectives, benefits, costs, and risks of the proposed initiatives. A business case helps to align the risk mitigation initiatives with the enterprise's strategy and goals, and to obtain the necessary approval and support from senior management. The other options are not as effective as a business case, because:
Option B: A balanced scorecard is a tool to measure and monitor the performance of the enterprise across four perspectives: financial, customer, internal process, and learning and growth. It does not communicate the importance of risk mitigation initiatives, but rather the outcomes and impacts of them.
Option C: Industry standards are benchmarks or best practices that define the minimum requirements or expectations for a certain domain or activity. They do not communicate the importance of risk mitigation initiatives, but rather the compliance or alignment of them with the external environment.
Option D: A heat map is a tool to visualize and prioritize the risks based on their likelihood and impact. It does not communicate the importance of risk mitigation initiatives, but rather the severity and distribution of the risks. References = Risk and Information Systems Control Study Manual, 7th Edition, ISACA, 2020, p.
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The primary basis for prioritizing risk responses is the impact of the risk. The impact of the risk is the consequence or effect of the risk on the organization's objectives or operations, such as financial loss, reputational damage, operational disruption, or legal liability. The impact of the risk is one of the key dimensions of risk analysis, along with the likelihood of the risk. The impact of the risk helps to determine the severity and priority of the risk, and to select the most appropriate and effective risk response. The impact of the risk also helps to evaluate the cost-benefit and trade-off of the risk response, and to measure the residual risk and the risk performance. The other options are not the primary basis for prioritizing risk responses, although they may be considered or influenced by the impact of the risk. The replacement cost of the business asset, the cost of risk mitigation controls, and the classification of the business asset are all factors that could affect the value or importance of the business asset, but they do not necessarily reflect the impact of the risk on the business asset or the organization. References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.3.1, page 4-25.

According to the Risk and Information Systems Control documents, implementing record retention tools and techniques is the best solution in this scenario. Record retention involves managing the lifecycle of records, including their creation, usage, storage, and disposal. By implementing record retention policies, organizations can define how long emails and other data should be retained before being deleted. This helps in efficiently managing storage space and reducing unnecessary storage costs.
Establishing e-discovery and data loss prevention (DLP) (Option B) focuses more on legal and compliance aspects and may not directly address the issue of reducing storage costs. Sending notifications when near storage quota (Option C) is a reactive approach and may not prevent the exponential increase in storage costs.
Implementing a bring your own device (BYOD) policy (Option D) is unrelated to the issue of email storage costs.
References = Risk and Information Systems Control Study Manual